v. 1.0.0.0

qa/rpc-tests/invalidateblock.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python2
+# Copyright (c) 2014-2015 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#
+# Test InvalidateBlock code
+#
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import *
+
+class InvalidateTest(BitcoinTestFramework):
+    
+        
+    def setup_chain(self):
+        print("Initializing test directory "+self.options.tmpdir)
+        initialize_chain_clean(self.options.tmpdir, 3)
+                 
+    def setup_network(self):
+        self.nodes = []
+        self.is_network_split = False 
+        self.nodes.append(start_node(0, self.options.tmpdir, ["-debug"]))
+        self.nodes.append(start_node(1, self.options.tmpdir, ["-debug"]))
+        self.nodes.append(start_node(2, self.options.tmpdir, ["-debug"]))
+        
+    def run_test(self):
+        print "Make sure we repopulate setBlockIndexCandidates after InvalidateBlock:"
+        print "Mine 4 blocks on Node 0"
+        self.nodes[0].generate(4)
+        assert(self.nodes[0].getblockcount() == 4)
+        besthash = self.nodes[0].getbestblockhash()
+
+        print "Mine competing 6 blocks on Node 1"
+        self.nodes[1].generate(6)
+        assert(self.nodes[1].getblockcount() == 6)
+
+        print "Connect nodes to force a reorg"
+        connect_nodes_bi(self.nodes,0,1)
+        sync_blocks(self.nodes[0:2])
+        assert(self.nodes[0].getblockcount() == 6)
+        badhash = self.nodes[1].getblockhash(2)
+
+        print "Invalidate block 2 on node 0 and verify we reorg to node 0's original chain"
+        self.nodes[0].invalidateblock(badhash)
+        newheight = self.nodes[0].getblockcount()
+        newhash = self.nodes[0].getbestblockhash()
+        if (newheight != 4 or newhash != besthash):
+            raise AssertionError("Wrong tip for node0, hash %s, height %d"%(newhash,newheight))
+
+        print "\nMake sure we won't reorg to a lower work chain:"
+        connect_nodes_bi(self.nodes,1,2)
+        print "Sync node 2 to node 1 so both have 6 blocks"
+        sync_blocks(self.nodes[1:3])
+        assert(self.nodes[2].getblockcount() == 6)
+        print "Invalidate block 5 on node 1 so its tip is now at 4"
+        self.nodes[1].invalidateblock(self.nodes[1].getblockhash(5))
+        assert(self.nodes[1].getblockcount() == 4)
+        print "Invalidate block 3 on node 2, so its tip is now 2"
+        self.nodes[2].invalidateblock(self.nodes[2].getblockhash(3))
+        assert(self.nodes[2].getblockcount() == 2)
+        print "..and then mine a block"
+        self.nodes[2].generate(1)
+        print "Verify all nodes are at the right height"
+        time.sleep(5)
+        for i in xrange(3):
+            print i,self.nodes[i].getblockcount()
+        assert(self.nodes[2].getblockcount() == 3)
+        assert(self.nodes[0].getblockcount() == 4)
+        node1height = self.nodes[1].getblockcount()
+        if node1height < 4:
+            raise AssertionError("Node 1 reorged to a lower height: %d"%node1height)
+
+if __name__ == '__main__':
+    InvalidateTest().main()